Principles, materials and methods of architectural construction are examined as they relate to the exterior enclosure systems of buildings. An analysis of materials and systems, including: dampproofing, waterproofing, curtain walls, windows, glass and glazing, sealants and joint design, moisture and heat control is undertaken. Codes and standards are considered for their affects on the technical aspects of the construction process. The importance of maintaining the integrity of exterior enclosure systems is stressed.